Nice clean build, well done, especially for a first build!
He are couple of tips to make your next build easier and this a bit better.
Only thing that held me up for a few minutes was threading the chain through and around the motor sprocket. Solved that by just using a vice grip at the right width to turn the sprocket with the cover off.
Your kit included spark plug wrench will turn the nut on your output sprocket.
To make threading the chain easy:
1. pull the spark plug to relieve compression.
2. use the same wrench to turn the sprocket nut clockwise and feed your chain in from the bottom. Going counter-clockwise could loosen the nut.
3. run the chain out the top all the way to your back sprocket 1/2 way down the back, put the other end on the sprocket to make it easy to get the right chain length and put the master link on.
the perfect bike with it's reversible rear wheel having a direct drive sprocket on the left side which I had to remove
ouch, a '10 speed' bike with no pedal gears?
You might be able to climb the hills with the right pedal gearing to help the engine.
You could put a tooth or two larger pedal side rear sprocket on, that will give you more low end pedal torque right where you need it, for starting and going slow up hill.
I removed the rear brake because there really was not enough handlebar space to fit both levers on the left side.
Braking is a bit weak and squeaky.
I implore you to please buy a self adjusting dual pull brake lever for $10.50 to replace your single pull and put your back brake back on!
http://www.sickbikeparts.com/catalo...ducts_id=41&osCsid=7il4bvtko24i4b5j9a8bo0stj2
What goes up must come down, and riding a motorized bike back down a beat up roadway hill you couldn't ride up with only one weak squeaky brake is a serious wreck just waiting to happen.
Just trust me, rather all of us here on this...
No motorized bicycle should be operated without both front and rear brakes.
Again nice clean build and I look forward to seeing what you do for a more 'rider friendly' comfortable beach cruiser bike in the future.